The connector supports mated stacking heights of 9mm, 10mm, 11mm, and 12mm — a single part number covers a range of board spacing, which simplifies BOM management when the stack height isn't finalised early in the design.
What the 0.80mm Pitch and 80 Positions Mean for Your Board Layout
At 0.031" (0.80mm) pitch, this is a dense interconnect — the 80 circuits fit in a footprint roughly 32mm wide across two rows.
Stacking Heights and Mating
The supported mated stacking heights — 9mm, 10mm, 11mm, 12mm — come from the combination of receptacle height above board (0.305" / 7.75mm) and the plug height. The outer shroud contacts shield the signal pins during mating and provide some guidance before the contacts engage.